blob: 7d8888341061356949f231bd31b1353acf76ee78 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
use std::collections::VecDeque;
pub struct EventQueue<E> {
queue: VecDeque<E>,
}
impl<E> EventQueue<E> {
pub const fn new() -> Self {
Self { queue: VecDeque::new() }
}
pub fn read(&mut self) -> Option<E> {
self.queue.pop_front()
}
pub fn write(&mut self, event: E) {
self.queue.push_back(event);
}
pub fn drain(&mut self) -> Vec<E> {
self.queue.drain(..).collect()
}
pub fn as_reader(&mut self) -> EventReader<E> {
EventReader { queue: &mut self.queue }
}
pub fn as_writer(&mut self) -> EventWriter<E> {
EventWriter { queue: &mut self.queue }
}
}
impl<E> Iterator for EventQueue<E> {
type Item = E;
fn next(&mut self) -> Option<E> {
self.read()
}
}
pub struct EventReader<'q, E> {
queue: &'q mut VecDeque<E>,
}
impl<E> EventReader<'_, E> {
pub fn read(&mut self) -> Option<E> {
self.queue.pop_front()
}
}
pub struct EventWriter<'q, E> {
queue: &'q mut VecDeque<E>,
}
impl<E> EventWriter<'_, E> {
pub fn write(&mut self, event: E) {
self.queue.push_front(event)
}
}
impl<E> Iterator for EventReader<'_, E> {
type Item = E;
fn next(&mut self) -> Option<E> {
self.read()
}
}
|
